MIESCHER [1870] observed that after prolonged peptic digestion of egg-yolk an insoluble substance separated out. This substance was foundby Bunge [1885] to contain iron in organic combination and was named by him " haematogen" because of its close resemblance to haemoglobin, at least so far as empirical composition was concerned. The chemical nature of this substance was investigated in more de...

Currently, the main limitation of Anion Exchange Membrane Fuel Cells is related to their low chemical stability under alkaline conditions due degradation quaternary ammonium-based head groups, which lowers transportation hydroxide ions as well. The knowledge intermolecular interaction various ammonium groups with key improving ion’s diffusivity and groups. Consequently, different anion exchange...

Nitrogen-doped double-walled carbon nanotubes (N-DWCNTs) were synthesized by floating catalytic chemical vapor deposition (FCCVD) at 1300 °C using ethanol and urea as nitrogen sources. For comparison, the undoped (DWCNTs) FCCVD source. Synthesized DWCNTs N-DWCNTs separately dispersed in dropped onto printed circuit board substrate. The fabricated sensors detected to ammonium hydroxide (NH4OH), ...